Incandescent-lamp hood



(No Model.) 2 Sheets-Sheet '1.

J. HEATH.

INGANDESOENT LAMP HOOD. No. 430,645. Patented June 24, 1890.

Juan/Heath I o u I v I (No Model.) 2 Sheets-Sheet 2.

J. HEATH.

INGANDESOENT LAMP HOOD.

Patented June 24, 18%.

W 3231;; adieu/wigs UNITED STATES PATENT OFFICE.

JOHN HEATH, OF PLYMOUTH, MASSACHUSETTS.

lNCANDESCENT-LAMP HOOD.

SPECIFICATION forming part of Letters Patent No. 430,645, dated June 24, 1890.

Application filed February 21, 1890. Serial No. 341,272. (No model.)

To all whom it may concern:

Be it known that I, JOHN HEATH, a citizen of the United States, residing at Plymouth, in the county of Plymouth and State of Massa chusetts, have invented a new and useful Incandescent-Lamp Hood, of which the following is a specification.

Thisinvention relates to incandescent-lamp hoods.

The object of the present invention is to provide a hood which will thoroughly and effectually protect the delicate incandescent lamp from the elements. This object I accomplish by means of my improved hood, which consists, essentially, of a hood proper and a central vertical tubular shank, as well as of adjunctive and specific details of construction incident thereto, which assist in carrying out said object, and certain auxiliaries which tend to enhance the value of the completed device, all as hereinafter more fully described, andillustrated in the accompanying drawings, in which Figure 1 is a side elevation of my hood complete. Fig. 2 is a central vertical section. Fig. 3 is a plan View with the cross-bar detached.

Heretofore it has been customary to connect' the cross-bar supporting the hood with the lamp itself by a metallic tube; but it very often happened that the wires running through that tube become short -circuited by striking against it, and the electricity passed along the tube, through the cross-bar, down the post, and to the ground. My improved hood and connections avoid this difficulty, in that Ienlarge the tube leading from the lamp upwardly to such an extent that it forms a shank, and is entirely out of contact with the wires at all times, and even with the metallic portion of the lamp under all ordinary circumstances. a

Referring to the accompanying drawings, I designates the incandescent lamp, which may be of any preferred form, size, and make.

The wires W, leading from the upper end of this lamp, pass through holes in the sides of an enlargement E at the apex of a hood H, formed in the shape of a hollow truncated cone. The wires thence pass downwardly upon the upper face of said hood, and may be embraced by guards G, if desired, and near the outer edges of the hood they pass upwardly to insulators on the opposite ends of the cross-bar O, whence they may be led farther upward to or connected directly with the line-wires in any preferred manner. The electric current causing the incandescence of the filament is thus conveyed from the linewires in a manner which will be clearly understood, and the lamp is supported directly by the wires themselves, which lead therefrom to the apex of the hood. Each of the wires at this point is heavily insulated separately from the other in any Well-known manner.

The cross-bar G is supported in any desired way, preferably from a pole, by a rod or wire 0 engaging its center, and at either side of this point bolts B pass through the cross-bar, and their lower ends are flattened and bent outwardly, as at b, so that they lie upon the outer face of the hood. Nuts N engage the bodies of these bolts above and below the cross-bar 0, whereby they may be adjusted in height, and supplemental bolts U or rivets pass through the flattened portions and through the hood to hold them together.

Beneath the hood H, and around the enlargement E at its apex, I secure the tubular shank T, having a flaring upper end i, which may be bolted or riveted to the hood around its enlargement. This shank extends downwardly such a distance as to effectually cover the upper end of the lamp I, whereby whatever rain or snow should beat in under the hood would strike the tubular shank, and would thence drip down onto the outer face of the metallic portion of the lamp, whence it would run down and around the bulb. It will thus be seen that the line-wires are connected with the filament by wires W, which are thoroughly insulated Where theypass beneath the guards G and where they enter the enlargement E; but within the tubular shank T the ordinary insulation will be sufficient, for the reason that the upper end of the metallic portion of the lamp will strike the sides of the tubular shank before the wires can come near the latter.

WVhen it is desired to detach the bulb, it

may be unscrewed or unhooked from the metal portion of the lamp in any well-known manner.

What I claim is 1. An incandescent-lamp hood comprising a hood proper suitably supported and having an upward enlargement E at its apex and guards G, leading from said apex to its outer edges, in combination with the,wires W, passing inwardly through said guards, turning downwardly within said enlargement, and connected with an incandescent lamp I at their lower ends, substantially as described.

2. The combination, with the hood H, the wires W, leading downwardly through the apex thereof, and the lamp 1, connected to their lower ends, of the tubular shank T, se-

cured to the under side of said hood around said wires, its lower end loosely surrounding the upper end of the lamp, substantially as described.

3. The combination, with the hood H, having the enlargement E above its apex, and the guards G, leading oppositely therefrom to the edges of the hood, the wires W, passing upwardly through said guards and turning downwardly within said enlargement, and the lamp I, connected to the lower ends of said Wires, of the tubular shank T, having an annular flange t at its upper end, secured to the under face of said hood, the body of said tubu lar shank embracing said Wires and its lower end loosely surrounding the upper end of the lamp, as and for the purpose set forth.

4. An incandescent-lamp hood comprising a hood proper, a cross-bar 0 above said hood, having the insulators at the ends, bolts B, having their lower ends rigidly connected to the hood and their upper ends passed loosely throughsaid cross-bar,and nuts N on saidbolts above and below the cross-bar, in combination with wires W, coiled around the insulators and leading from said cross-bar through the apex of said hood and connected with an incandescent lamp I at their lower ends, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

JOHN HEATH.

Witnesses:

HORACE J. DREW, DAVID HINCKLEY. 

